import demo5
from demo5 import jieCheng2
from demo5 import jieCheng as jc
from package1 import a as module_a
from package1.a import sumNA as sA
# 需要使用pip install numpy 安装
import numpy

a = 3
print(demo5.a)
print(jieCheng2(3))
jc(4)
module_a.sumNA(5)

import sys
# 查看模块运行时，如果需要导入其他模块，该去哪里找
print(sys.path)